[Elecraft] K2: 40m bandpass filter

[Sverre Holm (LA3ZA)]

All the proposed changes to the 40 m bandpass were, as far as I can recall,
intended to decrease the bandwidth from 300 kHz to 200 or 100 kHz. These
modifications can be found here:

Elecraft's 
http://www.elecraft.com/Apps/eu_40_meter_narrow_bandpass_filt.htm EU 40
Meter Narrow Bandpass Filter  and 
http://www.dl7maj.de/Modifications%20for%20BPF.pdf DL7MAJ's proposal  which
is almost the same as Elecraft's for 40 m.

However, with the increase in 40 m allocation in Europe (region 1) some
years ago and the decrease in the number of strong broadcast stations, these
changes should not be necessary any more. I changed my 40 m bandpass back to
the original one several years ago for this reason.


David Pratt-4 wrote:
> 
> I recall the 40m bandpass filter being changed several years ago. 
> 


-----
Sverre, LA3ZA

K2 #2198, K3 #3391
http://www.qslnet.de/member/la3za/K2/mod.html LA3ZA Unofficial Guide to K2
modifications 
-- 
View this message in context: http://elecraft.365791.n2.nabble.com/K2-40m-bandpass-filter-tp5924328p5924452.html
Sent from the Elecraft mailing list archive at Nabble.com.